PREFACE 



CERC is publishing this report because of its interest and value to coastal engineers. 



This report was prepared by Jon C. Boothroyd and Dennis K. Hubbard of the Coastal 

 Research Center, Department of Geology, University of Massachusetts. Work was done 

 under Contract No. DACW 72-70-C-0029 with CERC; partial field support was provided by 

 Contract No. N00014-67-A-0230-0001 with the Office of Naval Research (ONR), 

 Geography Branch. 



The barge used as a diving platform was built by Eugene G. Rhodes and James Terrell at 

 the Coastal Research Center. Special appreciation is extended by the authors to Kerry 

 Campbell and Martha Hubbard, who served as the deck crew and contributed greatly in 

 making the diving method a success. 



NOTE: Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79^^* Congress, approved 

 31 July 1945, as supplemented by PubUc Law 172, 88^" Congress, approved 7 November 

 1963. 



JAMES L. TRAYEJ 

 Colonel, Corps of ^jj^neers 

 Commander and Director 



